Yin deficiency is mostly due to blood deficiency, and "Yin deficiency produces internal heat", which is manifested as five upset and hot, dry mouth and throat, upset and rough breath, and yellow and dry urine. Physical weakness, palpitation, shortness of breath, dizziness, poor mental state; Irregular menstruation, dull complexion, dark pigmentation, chloasma and butterfly spots breed; Menopausal distress; Entering menopause prematurely; Generally, it is more common in female officials and various hyperthyroidism diseases such as tuberculosis and long-term low-grade fever. People with yin deficiency should eat more foods that nourish kidney yin, so as to nourish yin and subdue yang. Frequently selected foods, such as sesame, glutinous rice, mung bean, lotus root, Malantou, Chinese cabbage, fungus, tremella, tofu, sugarcane, plum, watermelon, cucumber, lily, yam, squid, turtle, sea cucumber, abalone, crab, milk, oyster, clam, jellyfish, duck, pigskin, etc. These foods are sweet in taste and cold in nature, all of which have the function of nourishing yin. Can be properly combined with nourishing yin medicated diet for targeted aftercare. Those with yin deficiency and excessive fire should eat less spicy food, less hot pot, less chicken, less steamed, fried, fried and baked food, and less longan and litchi in fruits. Yin deficiency is the only thing that doesn't need to avoid cold drinks. Cold drinks can regulate yin deficiency. Of course, you are encouraged to eat more, but you should not overdo it.